Roll wrapping



Sept. 25, 1962 A. F. OTTINGER ETA].

ROLL WRAPPING Filed May 6, 1959 United States Patent "ice 3,055,576 ROLL WRAPPING August F. Ottinger, St. Louis, Mo., and Charles V. Brady, deceased, late of St. Louis, Mo., assignors to Bemis Bro. Bag Company, St. Louis, Mo., a corporation of Missouri Filed May 6, 1959, Ser. No. 811,491 1 Claim. (Cl. 229-87) This invention relates to the wrapping of rolls or the like, and more particularly to wrapping-material for wrapping a roll, such as a carpet roll.

The conventional method of wrapping a roll of material such as carpet material (i.e., a so-called carpet roll) is to provide a rectangular wrapper having a length somewhat greater than the length of the roll and a width somewhat greater than the circumference of the roll, positioning the wrapper around the roll, pulling it tightly around the roll, then securing together the overlapping edges of the wrapper throughout the length of the roll by adhesive, and wire-tying the ends of the wrapper (which extend beyond the ends of the roll). For carpet roll wrapping, the wrapper generally consists of waterproof asphalt-laminated paper and burlap. Since such laminated wrapping material cannot generally be manufactured in widths large enough to provide a carpet roll wrapper from a single width, the wrapping material is generally supplied in a roll wound from two widths of the laminated material which are longitudinally seamed toget-her. The wrapping material is unwound from the roll, and a length thereof somewhat greater than the length of the carpet roll is cut off to provide the wrapper.

The above-described procedure is relatively laborious and costly, and among the several objects of this invention may be noted the provision of a special wrapping material for carrying out a less costly and laborious method of wrapping a roll or the like (such as a carpet roll), the Wrapping material being a single-width material, thus avoiding any necessity for longitudinally seaming together two widths of Wrapper material; and the provision of such a wrapping material applicable to rolls of various lengths and diameters. Other objects and features will be in part apparent and in part pointed out hereinafter.

The invention accordingly comprises the constructions hereinafter described, the scope of the invention being indicated in the following claim.

In the accompanying drawings, in which one of various possible embodiments of the invention is illustrated,

FIG. 1 is a perspective view showing wrapping material of this invention being unwound from a roll thereof and a wrapper or cover piece being cut therefrom;

FIG. 2 is a transverse cross section of the wrapping material, thicknesses being exaggerated;

FIG. 3 is a plan view illustrating how wrapping of a carpet roll is started;

FIG. 4 is a plan view illustrating how the wrapping of the carpet roll progresses; and,

iliIG. 5 is a view in elevation of the wrapped carpet ro Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.

Referring to FIG. 1 of the drawings, there is shown a roll R formed by winding up a continuous web of wrapping material W of this invention. This is a flexible waterproof wrapping material consisting, for example, of a layer of paper 1 and a layer of burlap 3 laminated by means of asphalt 5 (see FIG. 2). It is possible that cloth other than burlap and a waterproof laminant other than asphalt may be use. It is also possible that a singlelayer nonlaminated material, such as a suitable paper, may be used. The paper layer 1 is preferably (for carpet 3,055,576 Patented Sept. 25, 1962 roll wrapping) a creped kraft paper adapted to stretch both lengthwise and widthwise. Web W is a standard width web, for example, forty inches wide. The paper and burlap have the same width and the paper extends from edge-to-edge of the burlap.

In accordance with this invention, the web W is provided with a stripe 7 of a waterproof self-sealing adhesive, such as a self-sealing latex adhesive, along one edge of the web on one face thereof and a stripe 9 of the same adhesive along the other edge of the web on the other face thereof. It will be understood that by a self-sealing adhesive, we mean an adhesive which is such that when stripe 7 is pressed against stripe 9, the margins of the web will be adhered to one another, but which will not adhere readily to a surface which does not bear a like adhesive. of the convolutions of the roll R.

Now referring to FIG. 3, there is indicated at C a carpet roll to be wrapped. The sizes of carpet rolls may vary widely, ranging in length from eight feet up to eighteen feet, for example, and in diameter from sixteen inches to thirty inches, for example (thereby varying in circumference from about fifty inches to about ninetyfive inches). In accordance with this invention, the web W is unwound from the roll R and a parallelogram-shaped wrapper or cover piece 11 (see FIG. 1) is cut ofi therefrom. The length L of the parallelogram is so related to the length and diameter of the carpet roll C to be wrapped and the angle of inclination A of the ends of the parallelogram is so related to the diameter of the carpet roll C that the wrapper or cover piece 11 is adapted to be wrapped helically around the carpet roll with its margins overlapping to form a helically seamed tube T (see FIG. 5 fitting tightly on the carpet roll C and having end portions projecting beyond the ends of the carpet roll. The length L and angle of inclination A will vary for different lengths and diameters of carpet rolls, and a chart may be provided specifying the proper length L and angle A for various carpet roll lengths and diameters. An abbreviated example of such a chart, based on the use of wrapping material W forty inches wide, a two-inch overlap of material in the seams of tube T, and a sufficient extension of the ends of tube T beyond the ends of the carpet roll to allow for closing the ends of the tube on the ends of the carpet roll with five inches of the tube remaining at each end for wire-tying is as follows:

Diameter Length L Angle A of Length of Carpet R011, feet of Carpet of Wrapper, Ends of Roll, inches inches Wrapper,

degrees It will be understood that a full chart will provide information as to length L and angle A for various diameters of carpet rolls for each carpet roll length. For example, a full chart would provide information as to length L and angle A for ten foot carpet rolls of eighteen inch diameter, twenty inch diameter, twenty-four inch diameter, etc. The angle A is dependent upon the diameter of the carpet roll, being such that the length E of each end of the parallelogram is at least approximately equal to the circumference of the carpet roll. The value of angle A for any given roll circumference may be readily determined from the consideration that the sine of angle A is equal to the width of the wrapping material (forty inches, for example) divided by the circumference of This avoids sticking together (blocking) roll C with its edges overlapping to form the helically seamed tube T fitting tightly on the carpet roll and having end portions such as indicated at 13 in FIG. 5 projecting beyond the ends of the carpet roll. The winding or wrapping of the wrapper 11 around the roll C is started at one end of the roll as illustrated in FIG, 3, the roll C being so positioned relative to the wrapper 11 that one end of the roll is adjacent and parallel to one of the oblique ends of the wrapper. The winding progresses from one end of the roll C to the other as illustrated in FIG. 4. The margins of the wrapper 11 are overlapped as winding progresses and the stripe 7 of adhesive along one margin of the wrapper is brought into face-to-face contact with the stripe 9 of adhesive along the other margin, suflicient pressure being applied to cause the margins to adhere together to form a waterproof helical seam 15. Finally, the projecting ends 13 of the tube T are closed and fastened in closed position, as by means of wire tics such as indicated at 17 in FIG. 5. It will be understood that the ends of the tube may be secured in closed position in any suitable manner other than wire-tying.

While the invention has been above described as it pertains to the wrapping of carpet rolls '(for which it is especially suitable), it will be understood that it is applicable to Wrapping rolls of material other than carpet material and, in fact, to the wrapping of elongate objects in general.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As various changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

A roll of flexible waterproof wrapping material comprising a layer of paper laminated to a layer of burlap by asphalt, said layers being of substantially equal width and having their side edges substantially in register, said material having a stripe of self-Sealing waterproof latex adhesive along one edge thereof on the face of the paper layer, and a stripe of self-sealing waterproof latex adhesive along the opposite edge thereof on the face of the burlap layer.

References Cited in the file of this patent UNITED STATES PATENTS Re. 17,633 Rowe Apr. 1, 1930 732,889 Paver July 7, 1903 809,299 Henke et al. Ian. 9, 1906 892,474 Ware July 7, 1908 1,073,575 Batdorf Sept. 16, 1913 1,164,153 Woods Dec. 14, 1915 1,491,269 Joplin Apr. 22, 1924 2,157,898 Hohwart May 9, 1939 2,224,504 Milmoe Dec. 10, 1940 2,424,315 Hyatt et al. July 22, 1947 

